Top 6 Keys of Harmony Episodes

Well, everyone, Season 4 has come to an end and with it, the story arc revolving around the Tree of Harmony chest has now been concluded. Because of this, I'm pretty sure a lot of people are considering listing the episodes where the Mane 6 receive their Key of Harmony from worst to best. So I've decided to make this blog so that everyone on this site can give their opinion on which KOH episode they felt was great, terrible, hit or miss, etc. So, without further a due, how do you rank these episodes from your least to your most favorite?